Charlie and I decided long ago that in an investment lifetime, it's too hard to make hundreds of smart decisions. That judgment became ever more compelling as Berkshire's capital mushroomed and the universe of investments that could significantly affect our results shrank dramatically. Therefore, we adopted a strategy that required our being smart and not too smart at that, only a very few times. Indeed, we now settle for one good idea a year.
And people really behaved in a fraudulent way or something, we'll go back and find the culprits later on. But that really isn't the problem we have. I mean that's where it came from, though. We leveraged up and if you have a 20 percent fall in value of a $20 trillion asset, that's $4 trillion. And when $4 trillion lands - losses land in the wrong part of this economy, it can gum up the whole place.
I’ve worked in an economy that rewards someone who saves the lives of others on a battlefield with a medal, rewards a great teacher with thank-you notes from parents, but rewards those who can detect the mispricing of securities with sums reaching into the billions.
I'm not worried they're all about the investments we make. I mean, listen, this country - we've got $46,000 or $47,000 of GDP per capita. Now, we've done pretty darn well. We'll do better in the future.
To invest successfully, you need not understand beta, efficient markets, modern portfolio theory, option pricing or emerging markets. You may, in fact, be better off knowing nothing of these. That, of course, is not the prevailing view at most business schools, whose finance curriculum tends to be dominated by such subjects. In our view, though, investment students need only two well-taught courses - How to Value a Business, and How to Think About Market Prices.